This is a replacement Serpent Rear Body Support Set, and is intended for use with the Serpent 747 1/10 on road sedan. This is also an excellent upgrade for the S411 and 733 cars, but minor modification will be required to mount it to the shock tower. This body mount set helps to protect the body from folding inside itself when another car hits you from the back. It also helps to keep the rear of the body more stable. The height of the carriers is fully adjustable with the included 4x16mm grub screws and the set includes enough spacers to create the right length for the most commonly used bodies.